Writing guide



FIG. 1 is a perspective view of a writing guide showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a left side view with the opposite being a mirror image thereof. 

I claim the ornamental design for a writing guide, as shown and described. 